package luogu;

import java.util.Arrays;
import java.util.Scanner;

public class Main1923 {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int k = sc.nextInt();

        int [] arr = new int[n];
        for (int i = 0; i <n ; i++) {
            arr[i] = sc.nextInt();
        }

        Arrays.sort(arr);

        for (int i = 0; i <n ; i++) {
            if (i==k){
                System.out.println(arr[i]);
            }
        }
    }
}
